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Thèses sur le sujet « Electric arc furnace »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 25 juillet 2025

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1

Bergstedt, Edwin, Johan Földhazy, and Alexander Lundstjälk. "Vibration Analysis on AC Electric Arc Furnace." Thesis, KTH, Materialvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-173354.

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A computerized Fast Fourier Transform system has been used to analyse vibration measurements sampled from a 100-ton electric arc furnace. It has been the hypothesis that patterns in the vibration data would correlate to specific events in the electric arc furnace during the melting process. The theory was that the vibration patterns would be most powerful in multiples of 50 Hz, as the electric arcs operate with a frequency of 50 Hz. It was concluded that the multiples of 50 Hz were dominant. Investigation was made regarding how the amount of scrap affects the amplitude in the vibrations after

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2

Ramírez, Marco Aurelio (Ramírez-Argáez) 1970. "Mathematical modeling of D.C. electric arc furnace operations." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/8847.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2000.<br>Vita.<br>Includes bibliographical references (leaves 236-240).<br>A fundamental study of the Direct Current Electric Arc Furnace (DC-EAF) for steel-making has been carried out through the development of a rigorous mathematical model. The mathematical representation involves the simultaneous solution of Maxwell's equations for the electromagnetic fields, and the turbulent fluid flow and heat transfer equations. In solving the arc and bath regions it was assumed ( and justified) that the a

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3

MacRosty, Richard Swartz Christopher L. E. "Modelling, optimization and control of an electric arc furnace." *McMaster only, 2005.

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4

Coetzee, Lodewicus Charl. "Robust model predictive control of an electric arc furnace refining process." Diss., Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-08212007-145804.

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5

Best, Timothy Edward. "The reduction of electric arc furnace dust in carbon monoxide." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ36003.pdf.

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6

D'Souza, Neil S. "Thermal remediation of stainless steel electric arc furnace (EAF) dust." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0031/MQ64215.pdf.

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D'Souza, Neil S. "Thermal remediation of stainless steel electric arc furnace (EAF) dust." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30239.

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Along with the essential importance of the metallurgical sector, one must recognise that it is also one of the largest sources of environmental pollution. In particular, the problem of electric arc furnace (EAF) dusts is of a growing concern due to the increase in popularity of EAF steelmaking. This dust is classified as a hazardous product due to the elevated content of toxic metals (e.g., Cr).<br>Studies on the properties of EAF dusts are sparse. Experiments were performed in order to determine the chemical and physical characteristics of the dust. It was determined that EAF dust is constitu

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8

VAZ, GUILHERME DEMBERG. "QUANTIFICATION OF METALLIC IRON LOSSES IN ELECTRIC ARC FURNACE SLAGS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2011. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=18624@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>A metalurgia é a ciência que estuda os diversos meios para a transformação dos metais em materiais úteis à sociedade. A metalurgia do ferro representa a maior fatia da aplicação dos metais. Por ser tão representativa é chamada de Siderurgia. Dentre as diversas rotas para a transformação do ferro em aço, as usinas semi-integradas apresentam um forte apelo ecológico, pois utilizam a sucata, oriunda da reciclagem de ferro, e o ferro gusa como matérias-primas para a fusão no Forno Elétrico a Arco. Naturalmente, em todo processo industrial há a

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9

DENG, LEI. "Investigation of Electric Arc Furnace Chemical Reactions and stirring effect." Thesis, KTH, Materialvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-109248.

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Chemical energy plays a big role in the process of modern Electric Arc Furnace (EAF). The objective of this study is to compare the results of chemical reaction enthalpies calculated by four different methods. In general, the “PERRY-NIST-JANAF method” is used to calculate the chemical energies. However, this method heavily depend on heat capacities of the substances which have to be deduced from “Perry’s Chemical Engineers’ Handbook” and “NIST-JANAF Thermochemical Tables”, even the calculation process is complicated. Then, some other methods are introduced: Total enthalpy method, HT (High Tem

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10

Snell, Jared James. "Improved modeling and optimal control of an electric arc furnace." Thesis, University of Iowa, 2010. https://ir.uiowa.edu/etd/741.

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This thesis centers around an electric arc furnace (EAF) at a steel mini-mill in Wilton, IA. First, the thesis replicates previous optimization attempts. Next, the modeling is greatly altered to produce a much improved steel-melting model. Then, a new optimal control system is created and used to reduce energy and fuel costs over the melting process. Finally, results are presented. This thesis shows that when the new optimal control is simulated, the system shows significant energy and fuel savings.

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11

Arzpeyma, Niloofar. "Modeling of electric arc furnaces (EAF) with electromagnetic stirring." Thesis, KTH, Materialvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-43906.

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The influence of electromagnetic stirring in an electric arc furnace (EAF) has been studied. Using numerical modeling the effect of electromagnetic stirring on the thermal stratification and fluid flow has been investigated. The finite element method (FEM) software was used to compute the electromagnetic forces, and the fluid flow and heat and mass transfer equations were solved using a finite volume method (FVM) software. The results show that electromagnetic stirring has a significant effect on temperature homogenization and mixing efficiency in the bath. The important part of this study was

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12

Xia, Dan Kui. "Recovery of zinc from zinc ferrite and electric arc furnace dust." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq38338.pdf.

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13

Stewart, Timothy Glen. "The characterization and separation of electric arc steelmaking furnace flue dust." Thesis, Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/10094.

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14

Barnett, Catherine Grace. "The development of a construction material using electric arc furnace dust." Thesis, Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/80038.

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During the 1970s, the United States passed a series of laws regulating the handling and disposal of hazardous material. The new rules drastically increased the cost of processing toxic wastes. Consequently, many producers began investigating methods that would render toxic material non-hazardous. one solution developed was cement encapsulation, a process that incorporates toxic material into a cement matrix, thus solidifying the waste and reducing the potential for the migration of toxins into the environment. This process can be used to prepare a waste for disposal or can be used to develop a

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Jarnerud, Tova. "Construction and initial testing of a LABORATORY SCALE ELECTRIC ARC FURNACE." Thesis, KTH, Materialvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-215013.

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This work aims to describe the designing and construction of a 10 kg laboratory scale Electric Arc Furnace equipped with a system for measurement of electrical parameters. The EAF is used in a research project where the aim is to develop a new online measurement system for an optimized steel production with respect to a low energy consumption and resource efficiency. The laboratory scale is the first step in the project and will be followed by pilot testing and industrial testing, if the results are successful. In order to calculate how much energy that is fed into the system, the power and vo

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16

Kournetas, Nicholas George. "The use of oxygen to decrease electrical energy usage in the electric arc furnace." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0003/MQ34148.pdf.

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Rahman, Muhammad Mahfuzur Materials Science &amp Engineering Faculty of Science UNSW. "Fundamental investigation of slag/carbon interactions in electric arc furnace steelmaking process." Awarded By:University of New South Wales. Materials Science & Engineering, 2010. http://handle.unsw.edu.au/1959.4/44798.

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This work investigates the interactions of carbonaceous materials (metallurgical coke, natural graphite and HDPE/coke blends) with three EAF slags [FeO: 24% to 32%]. Experiments were conducted using the sessile drop technique (1500??C-1600??C) with off-gases (CO, CO2) measured using an IR analyzer; the wetting behaviour was determined from contact angle measurements. Estimation of slag foaming behaviour was determined from the droplet volume changes calculated using specialized software. At 1550??C, all slags were non-wetting with coke due to increased surface tension due to sulphur. At 1550??

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18

Kumar, Harjinder. "Laboratory evaluation of electric arc furnace slag as a potential wetland substrate." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=18690.

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Phosphorus (P) is considered as the controlling element in the proliferation of eutrophication in water bodies. Constructed wetlands are accepted as the most appropriate treatment technology for removal of nutrients, including phosphorus from agricultural drainage waters. As most of P removal in constructed wetlands is through precipitation and abiotic sorption, introduction of suitable substrate can enhance the P removal efficiency of the system. Slag has immense capacity for P sorption however its composition and ability as a wetland substrate varies from locale to locale. A study divided

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19

Wang, Weifeng. "Cost optimization of scrap when making steel with an electric arc furnace." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110703.

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In steel production, an electric arc furnace (EAF) is most commonly used to melt raw material in order to produce liquid steel. Scrap is the main raw material which differs in regard to the content of iron and of some chemical elements. The price of scrap depends on these attributes. In order to obtain the desired quality and quantity, each melting bath unit of steel has either its own material constraints or the constraints for electric arc furnace such as the capacity of EAF. In addition, the availability and transportation of scrap are also restricted because they need space. The research i

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20

Ljungqvist, Pär. "Evaluaton of sound-, current, and vibrations measurements in the Electric Arc Furnace." Thesis, KTH, Materialvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-160542.

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The aim of this report was to investigate new methods for measuring the condition of the scrap in the electric arc furnace. This was done by evaluating three different methods theoretically and chooses two of them for test in the electric arc furnace in Avesta. Due to lack of time and equipment only Total harmonic distortion (THD) measurements was used. The results show that THD reaches low values during refining. This suggests that all the scrap is melted and the arcs are stable.

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SANTOS, FELIPE SOMBRA DOS. "CHARACTERIZATION AND CHEMICAL PROCESSING, USING CHLORINE AGENTS, OF ELECTRIC ARC FURNACE DUST." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2008. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35488@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Este trabalho aborda um estudo alternativo voltado para o tratamento de um resíduo industrial gerado durante a fabricação de aço nos fornos elétricos, através do uso reagentes cloretantes. O resíduo analisado quantitativamente apresenta os seguintes resultados em relação aos seus principais constituintes: 29 por cento de Fe e 16 por cento Zn. Tem-se como principal objetivo uma recuperação do zinco contido e o simultâneo enriquecimento do resíduo em Fe2O3, que permitiria, então

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22

Bird, Simon. "Investigations of Electric Arc Furnace Slag Filters: Phosphorus Treatment Performance, Removal Mechanisms and Material Reuse." ScholarWorks @ UVM, 2009. http://scholarworks.uvm.edu/graddis/24.

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Around the world, the eutrophication of freshwater lakes and streams by the excess loading of phosphorus (P) has become one of the most important water quality issues. In Vermont, P pollution from urban and agricultural non-point sources has led to severe blooms of toxic cyanobacteria in Lake Champlain, and the degradation of the lake’s value as a drinking water source and its recreation potential. Electric arc furnace (EAF) steel slag has been identified as an effective material for use as a filter media for the removal of P from both point and non-point sources of pollution. In order to fur

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23

De, Colle Mattia. "Topological Data Analysis to improve the predictive model of an Electric Arc Furnace." Thesis, KTH, Materialvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-201744.

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Data mining, and in particular topological data analysis (TDA), had proven to be successful inabstracting insights from big arrays of data. This thesis utilizes the TDA software AyasdiTM inorder to improve the accuracy of the energy model of an Electric Arc Furnace (EAF), pinpointingthe causes of a wrong calculation of the steel temperature. Almost 50% of the charges analyzedpresented an underestimation of temperature, while under 30% an overestimation.First a dataset was created by filtering the data obtained by the company. After an initialscreening, around 700 charges built the dataset, eac

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Muntasser, Tarek Ziad. "Properties and durability of slag based cement concrete in the Mediterranean environment." Thesis, University of Surrey, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247994.

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Janjua, Rizwan Ahmed. "Optimisation of electric arc furnace dust recycling and zinc recovery by scrap de-zincing." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola&quot, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:105-1759549.

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A considerable rise in the Electric Arc Furnace steelmaking has taken place in the EU during the last decade. As a result, the amount of steelmaking dust has increased as well. This dust is recycled in order to recover the valuable amount of zinc present in it. In contrast to the increase in dust generation, the capacity of recycling sites has not changed accordingly and there are growing concerns over this imbalance. In the present thesis, logistics and resource allocation of dust recycling in the EU are analysed. Data collected through a questionnaire survey was used to formulate the transpo

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Lobel, Jonathan. "The direct recycling of dust generated in the electric arc furnace stainless steelmaking process /." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33335.

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This research investigates the possibility of recovering the metallic content of the dust generated by stainless steelmaking operations in the Electric Arc Furnace (EAF) at ATLAS Stainless Steels by recycling it to the EAF. The physical and chemical properties of the dust were determined. The pelletization of dust-carbon fines was optimized in order to obtain strong pellets capable of carbothermic self-reduction. The high temperature behavior of dust-carbon pellets was investigated in a Thermogravimetric Analyzer (TGA) coupled with a Fourier-Transform Infrared Spectrometer (FTIR). The mechanis

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Cubukcuoglu, Beste. "Performance assessment of alternative binders for the solidification/stabilisation of electric arc furnace dust." Thesis, University of Surrey, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.581794.

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The aim of this study is to evaluate the potential of using solidification/stabilisation (S/S) for the treatment of electric arc furnace dust (EAFD) and examine the effects of using a variety of industrial by-products, i.e., pulverised fuel ash (PFA), hydrated lime (hlime), steel slag and low-grade magnesium oxide (LGMgO) as cement replacements. LGMgO, steel slag and PFA with 0%, 40% and 70% EAFD additions met the Waste Acceptance Criteria (WAC) requirements with respect to unconfined compressive strength (UCS), initial and final setting times and consistency results. The acid neutralisation c

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Li, Jianghua Provatas Nikolas. "Kinetics of steel scrap melting in liquid steel bath in an electric arc furnace." *McMaster only, 2007.

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Moore, Tiffany Len. "Treatment of inorganic hazardous waste constituents found in electric arc furnace dust by solidification/stabilization." Thesis, Virginia Tech, 1991. http://hdl.handle.net/10919/41698.

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In this study, solidification and stabilization processes were evaluated for use as a treatment method for electric arc furnace dust. Specific objectives were (1) to develop a solidified material capable of meeting EPA requirements for heavy metal leaching, and (2) to develop a solidified material that could be used for construction. Results from the studies of the untreated electric arc furnace dust showed that the solubility of cadmium is controlled by the hydroxide species. Lead solubility is more complex because its solubility is controlled by a species other than hydroxide and therefore

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Shinohara, Asako. "Continuous and discrete model-based robust controllers with application to an electric arc furnace cooling system." Thesis, Coventry University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369973.

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Welch, Michael A. "Application of Fourier transformed infrared spectroscopy to CO post-combustion in electric arc furnace steel production." Thesis, University of Reading, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.408198.

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Kose, Neslihan. "Light Flicker Evaluation Of Electric Arc Furnaces Based On Novel Signal Processing Algorithms." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12611074/index.pdf.

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In this research work, two new flickermeters are proposed to estimate the light flicker caused by electric arc furnaces (EAFs) where the system frequency deviates significantly. In these methods, analytical expressions of the instantaneous light flicker sensation are obtained beginning from a voltage waveform and these expressions are used to obtain a flicker estimation method based on the IEC (International Electrotechnical Commission) flickermeter. First method is a spectral decomposition based approach using DFT to estimate the light flicker. The leakage effect of the DFT algorithm due to f

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Rathaba, Letsane Paul. "Model Fitting for Electric Arc Furnace Refining." Diss., 2004. http://hdl.handle.net/2263/25395.

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The dissertation forms part of an ongoing project for the modelling and eventual control of an electric arc furnace (EAF) process. The main motivation behind such a project is the potential benefits that can result from automation of a process that has largely been operator controlled, often with results that leave sufficient room for improvement. Previous work in the project has resulted in the development of a generic model of the process. A later study concentrated on the control of the EAF where economic factors were taken into account. Simulation results from both studies clearly demonstr

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Lu, Chien-Ming, and 盧建名. "The Application of Electric Arc Furnace to Concrete." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/r77sus.

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碩士<br>國立臺灣科技大學<br>營建工程系<br>106<br>The aim of this study evaluates the effect of electric arc furnace slag and ladle slag which is replaced for natural aggregate to the volume stability of concrete. Ladle slag is used with different level of stabilization and reduction. The study uses acid slag and alkaline slag combining with fly ash to design the mix proportion according to the densified mixture design algorithm (DMDA). The result shows that electric arc furnace slag concrete is superior in terms of harden properties, under the hot-pressure condition, all the sample is no expansion occurs, a

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(8114765), Yu Wang. "NUMERICAL MODELING OF THE METAL MELTING UTILIZING A DC ELECTRIC ARC PLASMA FOR ELECTRIC ARC FURNACE." Thesis, 2019.

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<div> <p>The electric arc furnace (EAF) is one of the most widely-used steelmaking process recycling the scrap as the raw material. Electric arc furnace steelmaking is a material-dependent and energy-consuming process. The electricity is utilized as the main heat source to melt the scrap by the electric arc discharging from the graphite electrodes. Since the plasma arc weld has the very similar heat transfer mechanism and melting phenomenon comparing with the scrap melting in EAF process, the model development for the free-burning arc, the arc-metal heat transfer, and the metal melting will r

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Tsai, Tsung-Lin, and 蔡宗霖. "Eco-efficiency Assessment on Basic Oxygen Furnace and Electric Arc Furnace Steelmaking Processes." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/44995673905372671872.

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碩士<br>國立中興大學<br>環境工程學系所<br>100<br>Steel industry is always considered by community as high pollution, energy desired, and high CO2 emission. The smelting process is the key to steel product quality with large input of multi-variety material that impacts environment seriously. New factory establishing and operation often receive neeistamce from associate party in recent population focus regarding to environmental safety and CO2 emission reduction issues. Therefore, the important lesson learned for business operation is how to balance profit and environmental safety. “Eco-efficiency indicators

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Chen, Chieh-Li, and 陳劼立. "Carbonation of Electric Arc Furnace Slag for Cement Replacement." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/72825895120581982691.

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碩士<br>國立臺灣大學<br>環境工程學研究所<br>103<br>In this study, an integrated process of waste-to-resource technology was developed. Carbon dioxide (CO2) sequestration using the accelerated carbonation of electric arc furnace (EAF) slag under various operational conditions in a high-gravity rotating packed bed (RPB) was investigated. Moreover, wastewater neutralization and product utilization were investigated as well. The performance of CO2 capture by EAFS were evaluated under various levels of reaction time, reaction temperature, rotational speed and liquid-to-solid ratio. The samples of reacted slurry we

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Mon, Hnin-Hnin, and 黃慶慶. "Feasibility study of concrete made with electric arc furnace slag." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/78535243205733258294.

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碩士<br>國立中央大學<br>土木工程研究所<br>96<br>Several studies indicate that alkali-activated slag cements and concretes present high mechanical strength and good performance in chemical attack. However waterglass-activated slag mortars and concretes show significantly higher shrinkage and shorter setting time than ordinary Portland cement. This study aims at reducing shrinkage and averting the rapid setting by partly replacing blast furnace slag in alkali-activated electric arc furnace reductive slag concrete. Also, concrete mix composition for alkali-activated electric-arc furnace reductive slag cement co

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Luo, Tian Si, and 羅天賜. "The effect of electric arc furnace on cogeneration system stability." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/29088929806263020245.

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Liang, Yi-Jie, and 梁亦傑. "Neural Network-based Approach for Modeling Electric Arc Furnace Load." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/31270576998424094537.

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碩士<br>國立中正大學<br>電機工程研究所<br>99<br>This thesis addresses the development of an electric arc furnace (EAF) model for the steel plant power system, where a neural network-based method is proposed. To observe the actual phenomena of the power quality disturbances with EAF loads, the power quality recorders are employed to provide the actual waveforms of the steel plant. It is known that artificial neural network (ANN) is a powerful scheme for function learning and nonlinear loads modeling. There are many different neural networks, and this thesis is using radial basis function neural network (RBFNN

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Lo, Hui-Ru, and 羅惠如. "Caustic extraction of zinc from electric arc furnace steel dust." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/45492345764893885668.

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碩士<br>國立高雄應用科技大學<br>化學工程與材料工程系<br>97<br>Electric arc furnace (EAF) contains mainly zinc ferrite(ZnFe2O4) and zincite(ZnO). There are still problems for recovery Zn for the EAF dusts between the pyrometallurgical and/or hydrometallurgical processes. In the thesis, a low temperature caustic leaching process was investigated for the extraction Zn from EAF dust. NaOH was chosen as leaching agent combining either NH4OH or citric acid. In this thesis, different alkaline leaching agent were used to find out the maximum zinc extraction ratio: (i) NaOH leaching agent; the highest zinc recovery ratio w

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Chen, Lee, and 陳立. "Utilization of Electric arc Furnace Oxidizing Slag as Concrete aggregates." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/18879892087165374798.

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博士<br>國立中央大學<br>土木工程研究所<br>91<br>Electrical arc furnace oxidizing slag is the by-product produced by the steelmaking plants from using recycled iron. The growing demand for steel has resulted in significant increase in the production of electrical arc furnace slag. Also, disposal of the slag has become more costly to the steelmaking industry due to stringent environmental regulations. Therefore, interest in this slag as a substitute for conventional construction material has increased considerably in recent years. The utilization of the slag not only solves a waste disposal problem but also pr

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Lin, Yo-Hung, and 林友煌. "Rapid Detection of Electric Arc Furnace Slag in Fine Aggregate." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/16497197815627452668.

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碩士<br>國立中興大學<br>土木工程學系所<br>104<br>Because the lacks of environmental awareness in Taiwan, domestic waste disposal were almost buried under ground, it can also be funded in steel industry wastes. Under erosion after heavy rain, the steel industry waste material of Electric Arc Furnace (EAF) slag from underground may mix into the natural aggregates. In addition, the aggregate manufacturers would mix the EAF slag into the fine aggregates due to cost down. The EAF slag disadvantages the quality of fine aggregates. When the concrete mixes these kinds of imperfect goods, not only the appearance of

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Lin, Yung-yu, and 林湧昱. "Composite Geopolymer Produced by Using Electric-arc Furnace Reductive Slag." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/11369635307014151202.

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碩士<br>國立中央大學<br>土木工程研究所<br>100<br>Electric arc furnace reductive slag contains the characteristics of silicon, aluminum, calcium is a multi-type calcium aluminum silicate materials, Si4+, Al3+, Ca2+ in an alkaline solution can be isolated, and the mutual bond formation of Si-O-Si and CSH gel the coexistence composite geopolymer. In this paper, the electric-arc furnace reductive slag produced composite geopolymer mortar specimens for physical and chemical performance and micro explore analysis, and the use of slag to replace the amount of reductive slag to improve the insufficient strength and

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Huang, Bo-ham, and 黃柏翰. "Study on Architecture-Oriented Electric Arc Furnace Manufacturing System Model." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/psp694.

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碩士<br>國立中山大學<br>資訊管理學系研究所<br>97<br>The electric arc furnace steelmakers produce steel across wide ranging sizes and different quality levels. The method of using electric arc for melting is an important process to produce steel from iron or scraps. The diversity of products and markets makes the steelmakers to operate within a large number of constraints of limited enterprise resources, so the electric arc furnace manufacturing system faces problems to integrate the enterprise resource planning system with the manufacturing execution system. The international automation society has come out

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Human, Cornelius Johannes. "Measurement and analysis methods for flicker at arc furnace installations." Thesis, 2012. http://hdl.handle.net/10210/4316.

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M.Ing.<br>\Vith electrical power networks expanding beyond their original design limits and the various non-linear loads on the network, power quality has become an important issue in electrical engineering. Some of the largest non-linear loads on the power network are arc furnaces used to melt various metal orrs and scrap metal. In this study the focus is on fliCker as a power quality issue and more specifically the measurement and analysis methods of flicker at arc furnace installations. By measuring flicker and 3 phase voltage and current waveforms the effect of changes in arc furnace syste

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Shu, Yu-Chia, and 許育加. "A Study of Electric Arc Furnace Slag on the Pervious Concrete." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/81280100952115028906.

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碩士<br>國立臺灣海洋大學<br>河海工程學系<br>95<br>Because of global warming, lack of land in Taiwan and over-development using waterproof pavement, the ecological system is deteriorated and the water resource circulation and air quality become worse. These factors result in the hot-island effect. In this study, making pervious concrete by slag-aggregate is studied. The parameters considered include different aggregate, aggregate size, paste amount and water/cement ratio. Mechanical properties, connected void ratio, permeability coefficient and soundness test were investigated. According to the data and capita

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Chu, Yu-Hung, and 朱祐弘. "Study on Electric Arc Furnace Dust Solidified / Stabilized with Geopolymeric Material." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/pywz45.

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碩士<br>國立臺北科技大學<br>環境工程與管理研究所<br>98<br>As electric arc furnace dust is one of the hazardous waste containing heavy metals, resulting in huge amounts of electric arc furnace dust to be managed. The stabilization/solidification of the electric arc dust using geopolymerization technology is described in this study. It was utilized fly ash, metakaolinite, sodium silicate and alkaline solution to prepare electric arc furnace dust geopolymerized solidification/stabilization matrices (EAFDGPSSM) in this study. The effects of curing time, SiO2/Na2O ratio and SiO2/Al2O3 ratio on compressive strength, he

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Shyng, Jin-Chyr, and 刑金池. "Utilization of the Electric Arc Furnace Oxidizing Slag as Microstructure Materials." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/28227947589546559960.

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碩士<br>國立臺北科技大學<br>材料及資源工程系碩士班<br>92<br>The iron and steel demand is increasing in the past few years due to the recovery of the international steel industry, increasing demand in mainland China and domestic high-speed railway project, therefore, the amount of slag produced along with steel metallurgical process is also increased. In the past, slag was treated as waste and was either dumped or buried at the waste yard, and thus, result in environmental problems. Because the limitations such as available land, high population and lack of resources if the EAF slag can be reutilized based upon it

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Wu, Ming-Cherng, and 吳銘誠. "Recycling Study of Electric Arc Furnace Slag of Stainless Steel Plant." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/91465101372082803496.

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碩士<br>國立高雄第一科技大學<br>環境與安全衛生工程所<br>91<br>The purpose of this study is to explore the feasibility of recycling stainless steel EAF slag as a resource. The valuable contents of oxidized slag of stainless steel EAF are mainly the stainless steel slag iron and steel drops, which accounted for about 14﹪of oxidized slag. Since they are with magnetism, they can be magnetically selected in mechanical and physical methods for remelting. After removing stainless steel slag iron and steel drops, the oxidized slag is a brittle material and its TCLP and pH values are under the determining standard of hazard

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